The Treo Pro finally brings Palm's flagship smartphone into the modern age. It's available exclusively from Telstra on Next G, and unlike its cousin the Centro it comes with WiFi.

The past two years have been littered with attempts at combining a phone with a PDA. The first was O2 with its XDA (January 2003, page 41) - an excellent first try, and one that will be revised this month.

The new handset takes on Nokia E71 and BlackBerry Bold, with touschscreen, WiFi and QWERTY keyboard..

The 650 really picks up where the 600 left off, and while it doesn't look too different to the eye, many of the changes are under the hood or subtle manipulations of the 600's design. It runs the new Palm OS 5.4 and has a much faster 312MHz Intel PXA270 processor, but the most immediate difference is the screen: it's now double the resolution at 320 x 320.

Purely because of its size, even the smallest PDA isn’t something you’re likely to feel comfortable holding to your ear as a phone for long periods of time. And, despite its slim curves and great physique, the Xda II is no exception.

Plenty of modern phones support email, of course, but what always made BlackBerry special was its push technology. With this, you don't need to dial up to collect your email: just sit back and wait for the messages to come to you. Wherever you are, if an urgent email comes through to any of your email addresses -- and the 7100v supports up to 10 -- you can act on it instantly.

Palm has embraced Microsoft, creating a neat 3G business phone in the process.

Product brief continues as we look at more products from June.

One of the best combinations of design and function in a smartphone we've seen for some time.

Palm OS stays on life support longer than expected.

A snappy performer, but let down by a fiddly keyboard.

NTP seeks to enforce mobile email patent with Treo maker.

Poor value and lacks a few high-end features.

Next Treo platform becomes a distant blip on the radar.

It's not for meetings, it's for meeting up. If you don't like the bulk of a Treo, here's your smartphone.

A seemingly new entrant to the PDA market, the Siemens SX45 is a Pocket PC PDA that may appear familiar to users or owners of the Cassiopeia range. That's because the SX45 is based on the Cassiopeia e-125 PDA.

Linux to replace Palm OS by the end of this year.

The ubiquitous micro-hard drive has found its way into a PDA. palmOne yesterday announced the LifeDrive, a PDA with basic features, a large 320x480 colour screen and a 4GB Hitachi hard drive.

You can stick them in your pocket or you can hold them in your hand. Six smartphones and phone PDAs reviewed

Data input is one of the biggest issues many people have with PDAs, and while stylus handwriting recognition and Graffiti dont take long to learn, they can be difficult to master, and cant compare to typing on a keyboard.